Dale,
Are you getting any drive? All bands?
Preselector makes a peak?
Try diffent bands?
Can you hear the signal in a close by rcvr?
If so...does the plate tune make a diffence in the signal level?
All the tubes correct? and all glowing?
Move the band switch all the way through all bands 20 times.
We'll get her squared away for you...
Just a start...
73,
Lee
-----Original Message-----
From: yash <[email protected]>
To: drakelist <[email protected]>
Sent: Sun, Feb 5, 2012 4:50 pm
Subject: [Drakelist] sick T4X
I now have my R4A back ,thanks to Lee"s Kc9cdt, fine work its doing a
great job. Now the T4X, Rebuilt the supply AC-4 ,heath kit board, came
out fine. Fired up the T4x today,set the bias current then followed the
tune up procedure ,function switch to TUNE, advanced the gain to .15
amps , turned the plate control to dip the meter ..... nothing happens,
meter stays same. There is a TINY dip when the plate is turned fully
clockwise ,but VERY small dip. Have not had the case off the t4x
yet,but of course the seller said it worked fine the last time he used
it.
sure could use some guidance on this. only other facts, supply is 100%
on all voltages, t4x going into a dummy load and testing is done with
the t4x not connected to the r4a.
thanks
dale wt4t
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